enhancement: update to use env vars for WIF backend #6

	---
	name: Unit Testing for TerraformTaskV4
	on:
	pull_request:
	branches:
	- main
	push:
	branches:
	- main
	workflow_dispatch:

	jobs:
	unit-test:
	name: Unit Test V4 Task
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Setup Node.js
	uses: actions/setup-node@v2
	with:
	node-version: '12'
	- name: Run Unit Tests
	run: \|
	node -v
	npm -v
	sudo apt install node-typescript
	tsc -v
	cd Tasks/TerraformTask/TerraformTaskV4
	npm install -include=dev
	npm test

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